xref: /linux/Documentation/devicetree/bindings/leds/issi,is31fl319x.yaml (revision 1644d755d0b06d0f1ee93e1c44336c29386546b4) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/leds/issi,is31fl319x.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: ISSI LED Controllers for IS31FL319{0,1,3,6,9}
8
9maintainers:
10  - Vincent Knecht <vincent.knecht@mailoo.org>
11
12description: |
13  The IS31FL319X are LED controllers with I2C interface.
14  Previously known as Si-En SN319{0,1,3,6,9}.
15
16  For more product information please see the links below:
17    https://lumissil.com/assets/pdf/core/IS31FL3190_DS.pdf
18    https://lumissil.com/assets/pdf/core/IS31FL3191_DS.pdf
19    https://lumissil.com/assets/pdf/core/IS31FL3193_DS.pdf
20    https://lumissil.com/assets/pdf/core/IS31FL3196_DS.pdf
21    https://lumissil.com/assets/pdf/core/IS31FL3199_DS.pdf
22
23properties:
24  compatible:
25    enum:
26      - issi,is31fl3190
27      - issi,is31fl3191
28      - issi,is31fl3193
29      - issi,is31fl3196
30      - issi,is31fl3199
31      - si-en,sn3190
32      - si-en,sn3191
33      - si-en,sn3193
34      - si-en,sn3196
35      - si-en,sn3199
36
37  reg:
38    maxItems: 1
39
40  shutdown-gpios:
41    maxItems: 1
42    description: GPIO attached to the SDB pin.
43
44  audio-gain-db:
45    $ref: /schemas/types.yaml#/definitions/uint32
46    default: 0
47    description: Audio gain selection for external analog modulation input.
48    enum: [0, 3, 6, 9, 12, 15, 18, 21]
49
50  "#address-cells":
51    const: 1
52
53  "#size-cells":
54    const: 0
55
56patternProperties:
57  "^led@[1-9]$":
58    type: object
59    $ref: common.yaml#
60    unevaluatedProperties: false
61
62    properties:
63      reg:
64        description: Index of the LED.
65        minimum: 1
66        maximum: 9
67
68      led-max-microamp:
69        description:
70          Note that a driver will take the lowest of all LED limits
71          since the chip has a single global setting. The lowest value
72          will be chosen due to the PWM specificity, where lower
73          brightness is achieved by reducing the duty-cycle of pulses
74          and not the current, which will always have its peak value
75          equal to led-max-microamp.
76
77allOf:
78  - if:
79      properties:
80        compatible:
81          contains:
82            enum:
83              - issi,is31fl3190
84              - issi,is31fl3191
85              - issi,is31fl3193
86              - si-en,sn3190
87              - si-en,sn3191
88              - si-en,sn3193
89    then:
90      properties:
91        reg:
92          enum: [0x68, 0x69, 0x6a, 0x6b]
93
94        audio-gain-db: false
95
96      patternProperties:
97        "^led@[1-9]$":
98          properties:
99            led-max-microamp:
100              default: 42000
101              enum: [5000, 10000, 17500, 30000, 42000]
102    else:
103      properties:
104        reg:
105          enum: [0x64, 0x65, 0x66, 0x67]
106
107      patternProperties:
108        "^led@[1-9]$":
109          properties:
110            led-max-microamp:
111              default: 20000
112              enum: [5000, 10000, 15000, 20000, 25000, 30000, 35000, 40000]
113  - if:
114      properties:
115        compatible:
116          contains:
117            enum:
118              - issi,is31fl3190
119              - issi,is31fl3191
120              - si-en,sn3190
121              - si-en,sn3191
122    then:
123      patternProperties:
124        "^led@[1-9]$":
125          properties:
126            reg:
127              maximum: 1
128  - if:
129      properties:
130        compatible:
131          contains:
132            enum:
133              - issi,is31fl3193
134              - si-en,sn3193
135    then:
136      patternProperties:
137        "^led@[1-9]$":
138          properties:
139            reg:
140              maximum: 3
141  - if:
142      properties:
143        compatible:
144          contains:
145            enum:
146              - issi,is31fl3196
147              - si-en,sn3196
148    then:
149      patternProperties:
150        "^led@[1-9]$":
151          properties:
152            reg:
153              maximum: 6
154
155required:
156  - compatible
157  - reg
158  - "#address-cells"
159  - "#size-cells"
160
161additionalProperties: false
162
163examples:
164  - |
165    #include <dt-bindings/gpio/gpio.h>
166    #include <dt-bindings/leds/common.h>
167
168    i2c0 {
169        #address-cells = <1>;
170        #size-cells = <0>;
171
172        led-controller@65 {
173            compatible = "issi,is31fl3196";
174            reg = <0x65>;
175            #address-cells = <1>;
176            #size-cells = <0>;
177
178            shutdown-gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;
179
180            led@1 {
181                reg = <1>;
182                label = "red:aux";
183                led-max-microamp = <10000>;
184            };
185
186            led@5 {
187                reg = <5>;
188                label = "green:power";
189                linux,default-trigger = "default-on";
190            };
191        };
192    };
193...
194
195